Question about 1994 Ford F150 Styleside Supercab

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At startup my 94' F150 will oscillate from high to low idle

During warm or cold mornings when I start my truck the idle will oscillate from high to low rpm's.  During our current cold temps in wisconsin it now cuts out until I start again.  I'm guessing either a vacuum line or a mass air flow sensor or ??????
Any ideas or suggestions greatly appreciated.

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  • Anonymous Mar 29, 2014

    cold temp start check engine light comes on it goes off when engine warms up



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I had this problem once on an econoline van and it was the plantum gasket but before you change this check all the vacuum lines and get a digital volt meter and test the voltages on the mass air flow sensor and if you have to change the plantum gasket auto zone can print you out a diagram stating all you have to remove to replace it

Posted on Jan 09, 2009


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